Most slow swimming comes down to drag, not fitness. You can be in excellent cardiovascular shape and still crawl through the water because your body position, stroke mechanics, or breathing pattern is forcing you to fight the water instead of move through it. The good news is that the biggest speed gains in swimming come from technical fixes, not from swimming harder.
Drag Is the Biggest Speed Killer
Water is roughly 800 times denser than air, so even small increases in frontal resistance have outsized effects on your speed. The drag on your body increases at least quadratically as you go faster, meaning that doubling your effort does not come close to doubling your speed. Every bump, angle, and curve in your body creates turbulence. When water hits impact points like your head, shoulders, and hips, the local pressure spikes, flow slows down, and vortexes form behind you. Those vortexes act like a brake.
This is why two swimmers with identical fitness levels can have wildly different speeds. The one with a flatter, more streamlined position simply wastes less energy pushing water out of the way. Reducing drag is the single fastest path to swimming faster, and it costs zero extra effort.
Your Hips and Legs Are Probably Sinking
The most common body position problem in slower swimmers is hip and leg sinkage. When your lower body drops even slightly, you go from a sleek horizontal shape to something closer to a plow pushing through the water. Your effective frontal area balloons, and drag climbs dramatically.
Several things cause sinking hips. The most frequent culprit is looking forward instead of down. Your head acts like a lever: when you lift it to see the wall or look ahead, your hips and legs drop in response. Research on head position and passive drag confirms that an aligned, downward-facing head allows the best water penetration, while any displacement upward disrupts laminar flow and increases resistance. Try looking straight at the bottom of the pool. You should feel your hips rise almost immediately.
Weak core engagement also plays a role. If your midsection sags, your body bends at the waist and your legs trail deep. Thinking about keeping a straight line from head to heels, as if you’re planking through the water, helps correct this.
Your Catch Is Slipping Water
The “catch” is the moment your hand enters the water and sets up to pull. It is where most of your propulsion comes from, and it’s where most recreational swimmers lose the most speed. The typical mistake is a “dropped elbow,” where your elbow sinks below your hand as you pull. This turns your arm into a narrow paddle that slices through the water without grabbing much of it.
The faster alternative is called an early vertical forearm. Instead of pulling with a straight or drooping arm, you bend your elbow early so your fingertips point toward the bottom of the pool while your elbow stays near the surface. This positions your entire forearm and hand as one large paddle pressing water directly backward. Swimmers who make this switch often report fewer strokes per length and faster times, because the force is directed horizontally toward their feet rather than mostly downward.
Another common entry error is crossing your hand over the centerline of your body. When your hand enters the water past the midline of your head, it creates a slight delay before it can connect with the water for propulsion. It also sets your shoulder up for impingement over time. Each hand should enter the water roughly in line with its own shoulder, fingertips first, then extend forward before starting the catch.
Stroke Length Matters More Than Stroke Rate
Your swimming speed is the product of two things: how many strokes you take per minute (stroke rate) and how far you travel with each stroke (stroke length). For most swimmers who feel slow, the issue is stroke length. You’re churning your arms fast but not actually going anywhere with each pull.
Data from elite freestyle events bears this out. In sprint races, stroke length has the strongest correlation with speed, while stroke rate shows little or even negative association. In other words, the fastest sprinters aren’t necessarily turning their arms over the quickest. They’re covering more water per stroke. For longer races, stroke rate becomes more important, but stroke length remains foundational at every distance.
A simple test: count your strokes for one length of the pool. Most 25-yard pools see recreational swimmers taking 22 to 30 or more strokes per length. Competitive swimmers often take 12 to 16. If your count is high, you’re spinning your wheels. Focus on extending each stroke, finishing your pull all the way past your hip, and gliding briefly with each stroke cycle. Reducing your count by even 3 to 4 strokes per length usually means a noticeable speed gain.
Your Kick Might Be Hurting More Than Helping
Here’s a counterintuitive fact: the flutter kick in freestyle contributes only about 10 to 12% of total propulsion power. Yet a bad kick can consume a massive amount of energy and actually increase drag. Kicking from the knees (a “bicycle kick”) pushes your thighs forward into the water like a parachute. An effective kick is small, fast, and driven from the hips, with relatively straight legs and relaxed ankles.
Ankle flexibility plays a surprisingly large role in kick effectiveness. Swimmers with stiffer ankles can’t point their toes enough to create a streamlined, fin-like foot position. Research on trained swimmers found that restricting ankle flexibility by about 10% reduced swimming velocity and kick efficiency significantly, with a large effect size. The correlation between ankle flexibility and swimming speed was strong (r = 0.538). If you have stiff ankles from years of running or other land sports, regular stretching to improve your ability to point your toes can translate directly into faster swimming.
For many recreational swimmers, the best strategy is actually to kick less. A gentle two-beat kick (one kick per arm stroke) keeps your legs from sinking without draining your energy. Save the powerful six-beat kick for sprinting or racing.
Breathing Technique Breaks Your Position
Every breath is an interruption to your streamline. Slower swimmers tend to lift their head forward or upward to breathe, which drops the hips, increases frontal area, and creates a surge of drag with every breath cycle. The fix is to rotate your body to the side and breathe into the pocket of air that naturally forms near your head. One goggle lens should stay in the water. If you can see the ceiling, you’re lifting too high.
Breathing frequency matters too. If you breathe every stroke cycle, you’re disrupting your position constantly. Breathing every three strokes (bilateral breathing) not only reduces the total number of disruptions per length but also promotes more balanced rotation on both sides, which keeps your stroke more symmetrical.
Small Equipment and Grooming Details Add Up
What you wear in the pool does make a difference, though less than technique. Research has shown that a typical women’s competitive swimsuit adds roughly 9% to body drag compared to a streamlined racing suit. Baggy board shorts or loose-fitting suits create even more resistance. A snug, competition-style suit eliminates fabric flutter and reduces your profile in the water.
Body hair also contributes measurably to drag. A study on competitive swimmers found that shaving body hair reduced blood lactate accumulation by 23% at maximal speed, meaning swimmers exerted significantly less physiological effort at the same pace after shaving. This doesn’t mean you need to shave your legs for lap swim, but it illustrates just how sensitive swimming speed is to surface friction. Wearing a swim cap, choosing a well-fitted suit, and keeping loose straps or dangling goggle attachments tucked away all chip away at drag.
How to Prioritize Your Fixes
If you’re feeling slow, resist the urge to simply swim more laps harder. The returns on that approach plateau quickly. Instead, work through these changes roughly in this order:
- Head position and body line. Look down, engage your core, and get your hips to the surface. This is the single highest-impact fix for most swimmers.
- Catch and pull mechanics. Set up an early vertical forearm. Enter the water in line with your shoulder, not past your midline.
- Stroke length. Count your strokes per length and work to reduce that number by gliding, finishing your pull, and eliminating wasted motion.
- Breathing. Rotate to breathe rather than lifting. Keep one goggle in the water.
- Kick. Kick from the hips, keep it small, and stretch your ankles regularly.
Even one or two of these corrections can take several seconds off your 100-meter time within weeks. Swimming fast is less about power and more about removing the things that slow you down.